`-h` of Subcommand does not print full information

Version: 0.3.0

I have command:

class Test: Subcommand("test") {
    val input by argument(ArgType.String, "This text will be written")

    override fun execute() { }
}

If I run with the arguments test -h, it prints very little information like:

Usage: android-dev-tools test options_list

However, if I made a mistake, then it shows full documentation as error:

Usage: android-dev-tools test options_list
Arguments:
    This text will be written { String }
Options:
    --help, -h -> Usage info

        at kotlinx.cli.ArgParser.printError(ArgParser.kt:348)
        at kotlinx.cli.ArgParser.parse(ArgParser.kt:635)
        at kotlinx.cli.ArgParser.parse(ArgParser.kt:640)
        at kotlinx.cli.ArgParser.parse(ArgParser.kt:521)
        at com.vinted.devtools.android.AppKt.main(App.kt:14)

Reproduction: problem.zip

An easiest way to reproduce:

./gradlew run --args="test -h" // I am expecting full help here
./gradlew run --args="test"     // works as expected

[LepilkinaElena]

Fixing this problem PR is already waiting review.

[LepilkinaElena]

0.3.1 version with fix was published